Computational experience with an algorithm for the lock box problem
Robert L. Bulfin, Vivien Unger · 1973
The lock box problem involves the location of post office boxes within a company's distribution area. Customer remittances are mailed to these boxes and the checks are processed by a local bank. The problem is to locate the boxes in a way that will minimize processing cost and the opportunity costs associated with the remittances while in transit (float costs).